package com.github.tangmonkmeat;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

/**
 * Description:
 *
 * @author zwl
 * @version 1.0
 * @date 2021/7/15 下午10:54
 */
public class a加b等于c的组合个数 {

    public static void main(String[] args) {

        List<Integer> l = new ArrayList<>();
        l.add(null);

        Integer[] ll = new Integer[l.size()];
        l.toArray(ll);

        System.out.println(ll[0]);

    }

    // 1,8,9,10

    public int NumberOfTriplets (int[] arr) {
        Arrays.sort(arr);
        int a = 0, b = 1, c = 2;
        int nums = 0;

        return nums;
    }
}
